CVE-2025-1240: winzip computing winzip Out-of-bounds Write

Vulnerability summary

CVE-2025-1240 is a high (CVSS 8.8) Out-of-bounds Write vulnerability in winzip computing winzip. EPSS estimates a 10.31% chance of exploitation in the next 30 days, higher than 95.6% of scored vulnerabilities.

Timeline

1. 11-02-2025
   PublishedVulnerability first disclosed.
2. 12-02-2025
   Last modifiedVulnerability information updated.

Description

WinZip 7Z File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of WinZip. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of 7Z files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-24986.

• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.